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Off-line Admission Control for Advance Reservations in Star Networks

  • Udo Adamy
  • Thomas Erlebach
  • Dieter Mitsche
  • Ingo Schurr
  • Bettina Speckmann
  • Emo Welzl
Part of the Lecture Notes in Computer Science book series (LNCS, volume 3351)

Abstract

Given a network together with a set of connection requests, call admission control is the problem of deciding which calls to accept and which ones to reject in order to maximize the total profit of the accepted requests. We consider call admission control problems with advance reservations in star networks. For the most general variant we present a constant-factor approximation algorithm resolving an open problem due to Erlebach. Our method is randomized and achieves an approximation ratio of 1/18. It can be generalized to accommodate call alternatives, in which case the approximation ratio is 1/24. We show how our method can be derandomized. In addition we prove that call admission control in star networks is \({\mathcal APX}\)-hard even for very restricted variants of the problem.

Keywords

Admission Control Approximation Ratio Connection Request Call Admission Control Advance Reservation 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer-Verlag Berlin Heidelberg 2005

Authors and Affiliations

  • Udo Adamy
    • 1
  • Thomas Erlebach
    • 2
  • Dieter Mitsche
    • 1
  • Ingo Schurr
    • 1
  • Bettina Speckmann
    • 3
  • Emo Welzl
    • 1
  1. 1.Institute for Theoretical Computer ScienceETH ZürichZürichSwitzerland
  2. 2.Department of Computer ScienceUniversity of LeicesterLeicesterUK
  3. 3.Department of Mathematics and Computer ScienceTU EindhovenEindhovenThe Netherlands

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